By planting (I) treated rice seeds, effective long-term protection of rice plants is obtd. by use of systemic insecticides, without the water pollution problems or destruction of useful species associated with application of insecticides to paddy fields.COLLIOT FRANCOIS...
What kind of the lifestyle does Japanese have? A. Rice planting. B. Slash and burn. C. Animal husbandry. D. Fishing and gathering. 查看完整题目与答案 蚂蚁群体中负责筑巢的是? A. 雄蚁 B. 兵蚁 C. 工蚁 查看完整题目与答案 (),都有利于细菌的发生和生长。 A. 培养基或培养...
The CLM4.5 crop model is extended to operate globally through the addition of rice and sugarcane as well as tropical varieties of corn and soybean (Badger & Dirmeyer, 2015; Levis et al., 2018). These crop types are added to the existing temperate corn, temperature soybean, spring wheat, ...
Ginger ispropagatedby planting rootstalk cuttings and has been under this type of cultivation for so long that it no longer goes to seed. Harvesting is done simply by lifting the rhizomes from thesoil, cleansing them, and drying them in the sun. The dried ginger rhizomes are irregular in sh...
susceptible toDutch elm disease, a devastating fungoid disease spread bybark beetles. Dutch elm disease has drastically reduced wild and cultivated elm populations throughout much ofEuropeandNorth America. Some species are alsovulnerabletoelm phloem necrosis. Resistant strains are preferred for planting....
parts ofSoutheast Asiadiscovered thatricefields in whichmosquitoferns were released produced higher yields of grain. For centuries, families jealously guarded their individual strains ofAzolla, keeping them alive in containers between plantings and inoculating the fields at the beginning of each crop ...
twigs. Permanent damage tofruittwigs is caused by the eggdepositionslits; when the weakened twigs mature into fruit-bearing limbs, they break under the weight of the fruit, and the crop is lost. Failures of this sort can be avoided by not planting young fruit trees in years ofcicada...
If the ideotype is not viewed in terms of crop improvement through breeding but rather of adaptation to the cropping system (shade, planting density, row width, fertilization, irrigation, etc.), then the phenotypic plasticity should be exploited to obtain the desired ideotypes. Crop management is...
But for some farmers and particularly for many Black sharecroppers in the South, the Agricultural Adjustment Act caused deeper poverty when it halted planting. It was the landowners who were paid the subsidies for not planting, and, in almost all cases, they did not distribute this money to ...
A number of other organic treatments, including copper-based fungicides, baking soda solutions, and neem oil, have also proven effective. Planting resistant varieties, staking plants to improve air circulation, removing diseased plant parts, and sterilizing contaminated gardening shears can prevent or ...