Five soybean cultivars, one each from Maturity Groups (MG) III, IV, V, VI, and VII, all susceptible to Heterodera glycines, were planted in H. glycines-infested soil in April, May, June, and July at multiple locations in Arkansas and Missouri. The purpose of the study was to determine whether planting early reduces yield losses due to H. glycines. The population levels of cysts, eggs, and secon...

This paper demonstrates the potential of using Web search volumes for generating crop specific planting and harvesting dates in the USA integrating climatic, social and technological factors affecting crop calendars. Using Google Insights for Search, clear peaks in volume occur at times of planting and harvest at the national level, which were used to derive corn specific planting and harvestin...

Two schools of thought exist regarding the planting of bare-root seedlings. One school favors the “pull-up” m e t h o d w h e r e t h e s e e d l i n g i s p u l l e d u p 3 t o 1 0 c m a f t e r p l a c i n g t h e r o o t s i n t h e p l a n t i n g h o l e . A l t h o u g h t h i s a c t i o n p u r p o r t e d l y s t r a i g h t e n s t h e taproot, d a t a a r e l a c k i n g t o s h o w ...

Maize (Zea mays) has traditionally been a major cereal staple in southern Ghana. Through breeding and other crop improvement efforts, the zone of cultivation of maize has now extended to the northern regions of Ghana which, hitherto, were the home to sorghum and millet as the major cereals. Maize yield in the northern Ghana is hampered by three major biophysical constraints, namely, poor soil f...

Wheat yield forecasting is a significant component of planning and management of wheat exports from the Canadian Prairies. Commonly, regression models employing agroclimatic data pertaining to post-planting period are used as forecasting tools. However, the planning process of wheat export requires yield estimates even in advance of crop planting. Such advanced estimates are possible by using t...

this study was carried out to evaluate the association between laboratory seed characteristics and seedling emergence of canola cultivars that it's were produced under different irrigation regime and planting date. the treatments were included two planting date and two levels of irrigation (main factors) and seeds of five canola cultivars (sub factor) which in first year (2006-2007) had be...

this research aimed at investigating the effect of different levels of nitrogen and planting patterns on dry matter production and growth physiological indices in intercropping maize and sunflower. to do this a split plot experiment carried out based randomized complete block design with three replications in research field of shushtar islamic azad university. the main plot included three level...

Our review (Coen and Carpenter, 1993) describes how both the similarities and differences between flowers and shoots can be explained by the action of a set of genes modifying a common growth plan. This does not imply that flowers and shoots are directly derived from one another or that they serve the same function or that they express all of the same genes. We would also like to point out that...

Different methods of applying triadimefon to sugarcane setts and to the soil at planting for the control of smut were tested in field trials. Immersing healthy setts in cold water containing 250 pglml triadimefon was beneficial when the setts were subsequently inoculated with smut before planting or grown under low levels of the disease, but was ineffective when smut was severe. Treating seedca...

The efficacies of Heterodera glycines-resistant 'Fayene' soybean and aldicarb for managing H. glycines were compared to the experimental nematicides DS-47187 10F, DS-47357 10F, DS-48145 10F, DS-48165 10F, DS-46995 10F and 5G, and DS-38697 5G during 1981-83. Yield of Fayette was greater than yield of the H. glycines-susceptible cultivar treated with nematicide in 1981 and 1983. Yield of aldicarb...