{"id":2466,"date":"2017-04-11T11:57:17","date_gmt":"2017-04-11T09:57:17","guid":{"rendered":"http:\/\/www.supagro.fr\/wordpress\/modeleco\/?page_id=2466"},"modified":"2024-06-10T13:09:59","modified_gmt":"2024-06-10T11:09:59","slug":"activite-11-effet-de-la-variation-des-prix-sur-le-choix-des-tecniques","status":"publish","type":"page","link":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/auto-formation\/sequence2\/cours1-enrichir-le-modele-de-base\/lecon11\/activite-11-effet-de-la-variation-des-prix-sur-le-choix-des-tecniques\/","title":{"rendered":"Activity 11C : \u00ab Paris basin \u00bb model \u2013 Introducing several technologies and analysing sensitivity to prices"},"content":{"rendered":"<h4 style=\"text-align: right\"><u>Length : around 35 minutes<\/u><\/h4>\n<p>Consider the following new statement :<\/p>\n<p><em>\u00ab\u00a0A farmer in the Paris basin has a 100 ha large-scale farm. He can grow soft wheat (bleT), rapeseed, spring barley (orgeP) and winter barley (orgeH). For each crop, he can choose between three management systems :<\/em><\/p>\n<ul>\n<li><em>Intensive (written \u00ab\u00a0intens\u00a0\u00bb)\u00a0: it is the most intensive technology in terms of chemical inputs, with a \u201cpreventive\u201d use of phytosanitary products.<\/em><\/li>\n<li><em>Sustainable (written \u00ab\u00a0rais\u00a0\u00bb)\u00a0: it involves \u201csustainable\u201d practices. Phytosanitary treatments are determined following the observation of diseases or pests in the plot. The quantities used are adapted to the situation.<\/em><\/li>\n<li><em>Integrated pest management ( written \u00ab\u00a0protI\u00a0\u00bb)\u00a0: such practices integrate prophylactic agronomic measures which contribute to a decrease in the pressure caused by pests. They can involve considerations concerning sowing dates, variety choices, crop successions in a plot, etc\u2026<\/em><\/li>\n<\/ul>\n<p><em>The farmer knows the expected yields, the variable costs, and the working time required for each technology and each crop.<br \/>\nHe can work 2000 hours a year.<\/em><\/p>\n<table width=\"317\">\n<tbody>\n<tr>\n<td colspan=\"4\" width=\"317\">Yields (q\/ha) per crop and management<em> system<\/em><\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" width=\"84\">aa<br \/>\nCrop<\/td>\n<td colspan=\"3\" width=\"233\"><em><strong>Management system<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><em><strong>Intensive<\/strong><\/em><\/td>\n<td width=\"79\"><em><strong>Sustainable<\/strong><\/em><\/td>\n<td width=\"90\"><em><strong>Integrated pest management<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>bleT<\/strong><\/em><\/td>\n<td width=\"64\">72,8<\/td>\n<td width=\"79\">71<\/td>\n<td width=\"90\">65<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>rapeseed<\/strong><\/em><\/td>\n<td width=\"64\">31<\/td>\n<td width=\"79\">29<\/td>\n<td width=\"90\">26,3<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>orgeP<\/strong><\/em><\/td>\n<td width=\"64\">62,6<\/td>\n<td width=\"79\">62<\/td>\n<td width=\"90\">56<\/td>\n<\/tr>\n<tr>\n<td width=\"84\">orgeH<\/td>\n<td width=\"64\">71<\/td>\n<td width=\"79\">70<\/td>\n<td width=\"90\">64<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table width=\"377\">\n<tbody>\n<tr>\n<td colspan=\"4\" width=\"377\">Working time (hours\/ha) per crop and management <em>system<\/em><\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" width=\"84\">aa<br \/>\nCrop<\/td>\n<td colspan=\"3\" width=\"293\"><em><strong>Management system<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><em><strong>Intensive<\/strong><\/em><\/td>\n<td width=\"79\"><em><strong>Sustainable<\/strong><\/em><\/td>\n<td width=\"150\"><em><strong>Integrated pest management<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>bleT<\/strong><\/em><\/td>\n<td width=\"64\">3,2<\/td>\n<td width=\"79\">3,1<\/td>\n<td width=\"150\">3,1<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>rapeseed<\/strong><\/em><\/td>\n<td width=\"64\">4<\/td>\n<td width=\"79\">3,6<\/td>\n<td width=\"150\">4<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>orgeP<\/strong><\/em><\/td>\n<td width=\"64\">3,1<\/td>\n<td width=\"79\">3,1<\/td>\n<td width=\"150\">3,3<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>orgeH<\/strong><\/em><\/td>\n<td width=\"64\">3,3<\/td>\n<td width=\"79\">3<\/td>\n<td width=\"150\">3<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\" width=\"377\">Total costs (\u20ac\/ha) per crop and management<em> system<\/em><\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" width=\"84\">aa<br \/>\nCrop<\/td>\n<td colspan=\"3\" width=\"293\"><em><strong>Management system<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><em><strong>Intensive<\/strong><\/em><\/td>\n<td width=\"79\"><em><strong>Sustainable<\/strong><\/em><\/td>\n<td width=\"150\"><em><strong>Integrated pest management<\/strong><\/em><\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>bleT<\/strong><\/em><\/td>\n<td width=\"64\">652<\/td>\n<td width=\"79\">611<\/td>\n<td width=\"150\">534<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>rapeseed<\/strong><\/em><\/td>\n<td width=\"64\">724<\/td>\n<td width=\"79\">635<\/td>\n<td width=\"150\">576<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>orgeP<\/strong><\/em><\/td>\n<td width=\"64\">668<\/td>\n<td width=\"79\">676<\/td>\n<td width=\"150\">594<\/td>\n<\/tr>\n<tr>\n<td width=\"84\"><em><strong>orgeH<\/strong><\/em><\/td>\n<td width=\"64\">746<\/td>\n<td width=\"79\">680<\/td>\n<td width=\"150\">587<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>\u00a0<\/em><em>The selling price of soft wheat is 180\u20ac\/ton, that of rapeseed is 365\u20ac\/ton, that of spring barley is 155\u20ac\/ton, and that of winter barley 155\u20ac\/t.<br \/>\nThe objective of the farmer is to maximize his income.\u00a0\u00bb<\/em><\/p>\n<p><em>The data come from : Ecophyto R&amp;D vers des syst\u00e8mes de culture \u00e9conomes en produits phytosanitaires \u2013\u00a0 Volet 1. Tome II : Analyse comparative de diff\u00e9rents syst\u00e8mes en grandes cultures. Janvier 2009. INRA et le minist\u00e8re de l\u2019\u00e9cologie, de l\u2019\u00e9nergie, du d\u00e9veloppement durable et de l\u2019am\u00e9nagement du territoire.<\/em><\/p>\n<p style=\"text-align: center\"><strong>i<\/strong><u><strong>. Writing the model<img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"http:\/\/www.supagro.fr\/wordpress\/modeleco\/files\/2017\/11\/N2.png\" alt=\"\" width=\"25\" height=\"24\" \/><\/strong> <\/u><\/p>\n<p><strong>Before you begin, consider the following questions :<\/strong><\/p>\n<p>How many constraints does the model present ? What can you say about the labour constraint ?<\/p>\n<p>Calculate the gross margins of each crop for each management <em>system<\/em>. Can you anticipate the crops and cultivation methods which the farmer will choose ?<\/p>\n<p><strong>Write the model in GAMS and calculate the optimum cropping pattern for a farmer who maximizes his income. Check that your thoughts on the labour constraint and the chosen crops are confirmed.<\/strong><strong>sont confirm\u00e9s.<a href=\"http:\/\/www.supagro.fr\/wordpress\/modelecoen\/auto-formation\/sequence2\/cours1-enrichir-le-modele-de-base\/lecon11\/activite-11-solution-effet-de-la-variation-des-prix-sur-le-choix-des-tecniques\/\"><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"http:\/\/www.supagro.fr\/wordpress\/modeleco\/files\/2016\/08\/solution.png\" alt=\"solution\" width=\"92\" height=\"45\" \/><\/a><\/strong><\/p>\n<p style=\"text-align: center\"><strong><u>ii. <\/u><\/strong><u><strong>Analysing a technological change\u00a0<em><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"http:\/\/www.supagro.fr\/wordpress\/modeleco\/files\/2017\/11\/N1-1.png\" alt=\"\" width=\"25\" height=\"24\" \/><\/em><\/strong> <\/u><\/p>\n<p>You will carry out several simulations in order to study the influence of an increase in cereal prices on crop and technology choices. For that purpose, <strong>you will modify the price parameter in the model<\/strong>. Two scenarios will be simulated :<\/p>\n<p>Price decrease (Simulation 1) : 110\u20ac\/t of wheat, 210\u20ac\/t of rapeseed, 85\u20ac\/t of spring barley and 70\u20ac\/ha for winter barley.<\/p>\n<p>Price increase (Simulation 2) : 230\u20ac\/t of wheat, 400\u20ac\/t of rapeseed, 195\u20ac\/t of spring barley and 160\u20ac\/ha for winter barley.<\/p>\n<p><strong>Once you have modified the model and checked the solutions, answer the following questions.<\/strong><br \/>\n<script>\n                            if (window.qmn_quiz_data === undefined) {\n                                    window.qmn_quiz_data = new Object();\n                            }\n                    <\/script><script>window.qmn_quiz_data[\"43\"] = {\"quiz_id\":\"43\",\"quiz_name\":\"act11C\",\"disable_answer\":0,\"ajax_show_correct\":0,\"progress_bar\":\"0\",\"contact_info_location\":0,\"qpages\":{\"1\":{\"id\":\"1\",\"quizID\":\"43\",\"pagekey\":\"WaGPnYwM\",\"hide_prevbtn\":\"0\"}},\"skip_validation_time_expire\":0,\"timer_limit_val\":0,\"disable_scroll_next_previous_click\":0,\"disable_scroll_on_result\":0,\"disable_first_page\":\"0\",\"enable_result_after_timer_end\":0,\"enable_quick_result_mc\":0,\"end_quiz_if_wrong\":0,\"form_disable_autofill\":0,\"disable_mathjax\":0,\"enable_quick_correct_answer_info\":0,\"quick_result_correct_answer_text\":\"Correct! You have selected correct answer.\",\"quick_result_wrong_answer_text\":\"Wrong! You have selected wrong answer.\",\"quiz_processing_message\":\"\",\"quiz_limit_choice\":\"Limit of choice is reached.\",\"not_allow_after_expired_time\":0,\"scheduled_time_end\":false,\"prevent_reload\":0,\"limit_email_based_submission\":0,\"total_user_tries\":0,\"is_logged_in\":false,\"error_messages\":{\"email_error_text\":\"Not a valid e-mail address!\",\"number_error_text\":\"This field must be a number!\",\"incorrect_error_text\":\"The entered text is not correct!\",\"empty_error_text\":\"Please complete all required fields!\",\"contact_field_required_error_text\":\"Please complete all required fields!\",\"url_error_text\":\"The entered URL is not valid!\",\"minlength_error_text\":\"Required atleast %minlength% characters.\",\"maxlength_error_text\":\"Maximum %maxlength% characters allowed.\",\"recaptcha_error_text\":\"ReCaptcha is missing\",\"phone_error_text\":\"Phone number is invalid\"},\"questions_settings\":[]}\n                    <\/script>\t\t<div class='qsm-quiz-container qsm-quiz-container-43 qmn_quiz_container mlw_qmn_quiz  quiz_theme_default  '>\n\t\t\t\t\t\t\t\t<form name=\"quizForm43\" id=\"quizForm43\" action=\"\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages\/2466\" method=\"POST\" class=\"qsm-quiz-form qmn_quiz_form mlw_quiz_form\" novalidate enctype=\"multipart\/form-data\">\n\t\t\t\t<input type=\"hidden\" name=\"qsm_hidden_questions\" id=\"qsm_hidden_questions\" value=\"\">\n\t\t\t\t<input type=\"hidden\" name=\"qsm_nonce\" id=\"qsm_nonce_43\" value=\"9503d4e0e3\">\n\t\t\t\t<input type=\"hidden\" name=\"qsm_unique_key\" id=\"qsm_unique_key_43\" value=\"6a534c27ba772\">\n\t\t\t\t<div id=\"mlw_error_message\" class=\"qsm-error-message qmn_error_message_section\"><\/div>\n\t\t\t\t<span id=\"mlw_top_of_quiz\"><\/span>\n\t\t\t\t\t\t\t<section class=\"qsm-page \">\n\t\t\t\t\t\t\t\t<div class=\"quiz_section qsm-question-wrapper question-type-0 question-section-id-250 \" data-qid=\"250\">\n\t\t\t\t\t<div class='mlw_qmn_question ' >\n\t\t<p><strong>Following a decrease in prices (simulation 1), what is the new cropping pattern approach ?<\/strong><\/p>\n\t<\/div>\n\t\t<fieldset>\n\t\t<legend><\/legend>\n\t<div class='qmn_radio_answers '>\n\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question250-1 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question250\" id=\"question250_1\" value=\"0\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question250_1\">\n\t\t\t\t\tother\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question250-2 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question250\" id=\"question250_2\" value=\"1\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question250_2\">\n\t\t\t\t\t100 ha of \u201cintensive\u201d soft wheat\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question250-3 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question250\" id=\"question250_3\" value=\"2\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question250_3\">\n\t\t\t\t\t100 ha of \u201csustainable\u201d soft wheat\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question250-4 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question250\" id=\"question250_4\" value=\"3\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question250_4\">\n\t\t\t\t\t100 ha of \u201cintegrated pest management\u201d soft wheat\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t \t\t\t<label style=\"display: none !important;\" for=\"question250_none\">None<\/label>\n\t\t\t<input type=\"radio\" style=\"display: none;\" name=\"question250\" id=\"question250_none\" checked=\"checked\" value=\"\" \/>\n\t\t\t\t<\/div>\n\t<\/fieldset>\n\t<input type=\"hidden\" name=\"answer_limit_keys_250\" value=\"\" \/>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"quiz_section qsm-question-wrapper question-type-0 question-section-id-253 \" data-qid=\"253\">\n\t\t\t\t\t<div class='mlw_qmn_question ' >\n\t\t<p><strong>Why does price change have an impact on the cropping pattern ?<\/strong><\/p>\n\t<\/div>\n\t\t<fieldset>\n\t\t<legend><\/legend>\n\t<div class='qmn_radio_answers '>\n\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question253-1 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question253\" id=\"question253_1\" value=\"0\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question253_1\">\n\t\t\t\t\tBecause it impacts yields\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question253-2 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question253\" id=\"question253_2\" value=\"1\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question253_2\">\n\t\t\t\t\tBecause it involves technological progress\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question253-3 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question253\" id=\"question253_3\" value=\"2\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question253_3\">\n\t\t\t\t\tBecause it modifies gross margins\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t \t\t\t<label style=\"display: none !important;\" for=\"question253_none\">None<\/label>\n\t\t\t<input type=\"radio\" style=\"display: none;\" name=\"question253\" id=\"question253_none\" checked=\"checked\" value=\"\" \/>\n\t\t\t\t<\/div>\n\t<\/fieldset>\n\t<input type=\"hidden\" name=\"answer_limit_keys_253\" value=\"\" \/>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"quiz_section qsm-question-wrapper question-type-0 question-section-id-256 \" data-qid=\"256\">\n\t\t\t\t\t<div class='mlw_qmn_question ' >\n\t\t<p><strong>\u201c<em>Integrated pest management<\/em>\u201d soft wheat cropping pattern in the initial simulation made way for \u201csustainable\u201d soft wheat cropping pattern in simulation 1. Does this represent technological progress ? Why ?<\/strong><\/p>\n\t<\/div>\n\t\t<fieldset>\n\t\t<legend><\/legend>\n\t<div class='qmn_radio_answers '>\n\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question256-1 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question256\" id=\"question256_1\" value=\"0\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question256_1\">\n\t\t\t\t\tNo, because using the same quantity of inputs does not lead to greater wheat or other crop production\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question256-2 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question256\" id=\"question256_2\" value=\"1\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question256_2\">\n\t\t\t\t\tNo, they represent two different production technologies in which input and output quantities differ\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question256-3 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question256\" id=\"question256_3\" value=\"2\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question256_3\">\n\t\t\t\t\tYes, because more cereal crops (more significant yields for \u201csustainable\u201d than for \u201cIntegrated pest management\u201d) are grown in simulation 1 than in the initial simulation\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"qmn_mc_answer_wrap  mrq_checkbox_class\" id=\"question256-4 \">\n\t\t\t\t\t\t\t\t\t\t\t<input type='radio' class='qmn_quiz_radio qmn-multiple-choice-input ' name=\"question256\" id=\"question256_4\" value=\"3\" \/>\n\t\t\t\t\t<label class=\"qsm-input-label\" for=\"question256_4\">\n\t\t\t\t\tYes, because cereal crops are sold at a higher price in simulation 1 than in the initial situation\t\t\t\t\t<\/label>\n\t\t\t\t\t \t\t\t\t<\/div>\n\t\t\t\t\t \t\t\t<label style=\"display: none !important;\" for=\"question256_none\">None<\/label>\n\t\t\t<input type=\"radio\" style=\"display: none;\" name=\"question256\" id=\"question256_none\" checked=\"checked\" value=\"\" \/>\n\t\t\t\t<\/div>\n\t<\/fieldset>\n\t<input type=\"hidden\" name=\"answer_limit_keys_256\" value=\"\" \/>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/section>\n\t\t\t\t\t<input type=\"hidden\" name=\"qmn_question_list\" value=\"250Q253Q256Q\" \/>\n\t\t\t\t\t\t\t<div id=\"mlw_error_message_bottom\" class=\"qsm-error-message qmn_error_message_section\"><\/div>\n\t\t\t\t\t<input type=\"hidden\" name=\"qmn_all_questions_count\" id=\"qmn_all_questions_count\" value=\"3\" \/>\n\t\t\t\t\t<input type=\"hidden\" name=\"total_questions\" id=\"total_questions\" value=\"3\" \/>\n\t\t\t\t\t<input type=\"hidden\" name=\"timer\" id=\"timer\" value=\"0\" \/>\n\t\t\t\t\t<input type=\"hidden\" name=\"timer_ms\" id=\"timer_ms\" value=\"0\"\/>\n\t\t\t\t\t<input type=\"hidden\" class=\"qmn_quiz_id\" name=\"qmn_quiz_id\" id=\"qmn_quiz_id\" value=\"43\" \/>\n\t\t\t\t\t<input type='hidden' name='complete_quiz' value='confirmation' \/>\n\t\t\t\t\t\t\t\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t<div style=\"display: none;\" class=\"qsm-popup qsm-popup-slide\" id=\"modal-4\" aria-hidden=\"false\"><div class=\"qsm-popup__overlay\" tabindex=\"-1\" data-micromodal-close=\"\"><div class=\"qsm-popup__container qmn_quiz_container\" role=\"dialog\" aria-modal=\"true\"><div class=\"qsm-popup__content\"><img decoding=\"async\" src=\"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-content\/plugins\/quiz-master-next\/assets\/clock.png\" alt=\"clock.png\"\/><p class=\"qsm-time-up-text\"> Time's up<\/p><\/div><footer class=\"qsm-popup__footer\"><button class=\"qsm-popup-secondary-button qmn_btn\" data-micromodal-close=\"\" aria-label=\"Close this dialog window\" onclick=\"location.reload();\">Cancel<\/button><\/footer><\/div><\/div><\/div><\/p>\n<p><a href=\"http:\/\/www.supagro.fr\/wordpress\/modelecoen\/auto-formation\/sequence2\/cours1-enrichir-le-modele-de-base\/\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4121 alignright\" src=\"http:\/\/www.supagro.fr\/wordpress\/modelecoen\/files\/2018\/11\/backUnit.png\" alt=\"\" width=\"211\" height=\"66\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Length : around 35 minutes Consider the following new statement : \u00ab\u00a0A farmer in the Paris basin has a 100 ha large-scale farm. He can grow soft wheat (bleT), rapeseed, spring barley (orgeP) and winter barley (orgeH). For each crop, <a class=\"more-link\" href=\"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/auto-formation\/sequence2\/cours1-enrichir-le-modele-de-base\/lecon11\/activite-11-effet-de-la-variation-des-prix-sur-le-choix-des-tecniques\/\">Continue reading <span class=\"screen-reader-text\">  Activity 11C : \u00ab Paris basin \u00bb model \u2013 Introducing several technologies and analysing sensitivity to prices<\/span><span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":92,"featured_media":0,"parent":394,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2466","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages\/2466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/users\/92"}],"replies":[{"embeddable":true,"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/comments?post=2466"}],"version-history":[{"count":34,"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages\/2466\/revisions"}],"predecessor-version":[{"id":4996,"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages\/2466\/revisions\/4996"}],"up":[{"embeddable":true,"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/pages\/394"}],"wp:attachment":[{"href":"https:\/\/www.supagro.fr\/wordpress\/modelecoen\/wp-json\/wp\/v2\/media?parent=2466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}