CCA Crop Management Exam Questions With 100% Correct Answers

CCA Crop Management Exam Questions With 100% Correct Answers Which of the following is not considered when comparing a crop rotation with a monoculture? a. sociological consequences b. IPM c. labor and equipment needs d. yields - answera. sociological consequences Which of the following is an advantage of a crop rotation over a monoculture? a. higher level of management required b. timing fertilizer and pesticide application easier c. less equipment needs d. risk spread across more than one commodity - answerd. risk spread across more than one commodity Which of the following is a limitation of crop rotation over a monoculture? a. more equipment needed b. lower level of management required c. yield of all crops in the rotation increase d. irrigation usually needed - answera. more equipment needed ____________ increases available N, reduces erosion and increases infiltration. a. cover crops b. fallow c. nurse crops d. companion crops - answera. cover crops A double cropping system is where two crop are grown in the same field over _______________ months. a. 36 b. 24 c. 18 d. 12 - answerd. 12 ___________ is not a limitation of cover and companion crops. a. increased soil erosion b. reduced yields c. soil water depletion d. increased cost - answera. increased soil erosion Fields are fallowed to conserve _____________. a. energy b. nutrients c. water d. pesticides - answerc. water Pesticide carryover is important in ______________ crops. a. rotational b. cover c. companion d. adjacent - answera. rotational __________ is when a plant produces a chemical toxin that impairs the growth of different plant. a. allelopathy b. antibiosis c. autotoxicity d. symbiosis - answera. allelopathy In clean till systems, tillage can spread__________. a. insects b. disease c. weeds d. both b and c - answerd. both b and c Starter Fertilizer is commonly recommended for___. a. pastures b. no-till c. clean-till d. all crops - answerb. no-till The soil test values in the top 2 inches of the soil are _____ soil test values bellow 2 inches in no-till situation. a. equal too b. larger than c. smaller than d. less important than - answerb. larger than Which of the following must be sufficiently high to justify conversion of non-cropland to cropland a. nutrient availability b. pest populations c. crop yield potential d. erosion potential - answerc. crop yield potential Offspring of two plants which differ genetically are ________. a. clones b. hybrids c. sisters d. parent - answerb. hybrids Pollination is _________ in an an open-pollinated variety. a. artificial b. controlled c. negligible d. natural - answerd. natural