SynopsisReduction of wheat populations below 20 plants per square foot through systematic spacing of the individual plants produced progressively lower yields at each level. The adverse effects of reduced stand were reflected primarily in decreased head number per unit area and test weight. Head number per square foot was lowered by thinning to any level, but test weight did not decrease until the population was reduced below 10 plants per square foot.

SynopsisYields of wheat were lower in 4 of 7 experiments for fall application of N than for topdressings in the spring. In 3 long-time rotation experiments, 20 to 23% of the deviations of yields from the linear regression of yields on years could be attributed to winter rainfall. These results indicate that the major portion of N for wheat should be topdressed in the spring under Kentucky climatic conditions.

SynopsisLoaf volume, crumb grain, and mixing time of preripe hard red winter wheat were affected adversely when dried at temperatures over 160° F., depending on amount of moisture in the grain.

Basados en la comparación de siembras tardías y tempranas, se ha determinado el comportamiento de algunas variedades de trigo, en su mayoría cultivadas en la región V Sur, con respecto a su carácter de invernal y primaveral o semiprimaveral y sus requerimientos de longitud del día (fotoperíodo) . Las conclusiones se han deducido considerando los períodos transcurridos desde la germinación hasta el “lomo doble” (double ridge) y desde el “lomo doble” hasta la antesis, teniendo en cuenta que en siembras tardías un trigo típicamente invernal no forma “lomo doble”, y uno primaveral no exigente en fotoperíodo forma “lomo doble” y se comporta como muy precoz. En siembras tempranas uno primaveral exigente en fotoperíodo forma “lomo doble” y se comporta como tardío. | Based on the comparison of late and early sowing, it has been determined the behavior of some varieties of wheat, which, most of them, are being cultivated in the V souther region (Argentine), with respect to their winter, spring or semi-spring character and to their day-length requirements (photoperiod). The conclusions have been drawn by considering the periods elapsed from germination to the “double ridge” and from the “double ridge” to the anthesis, keeping in mind that in case of late sowings, a typical winter wheat does not form “double ridge” and that a spring one, not exacting in photoperiod, does form “double ridge”, its behavior being very precocious. In early sowings, a spring wheat exacting in photoperiod forms “double ridge” and is rather late in its behavior. | Facultad de Ciencias Agrarias y Forestales

When dry grains of winter wheat (7.9 % moisture content) and moist grains (22.7 % moisture) were mixed, the overall moisture content of the mixture became rapidly equalized during storage. On an average 77 % of the total changes in moisture content during the period of storage (approximately 3 1/2 months) occurred already within 24 hours after mixing. After four days there were very little changes in the moisture content. | Kuivaa (7.9 %) ja kosteata (22.7 %) syysvehnää sekoitettuna säilytettäessä jyvien kosteus tasaantui nopeasti. Koko tarkkailukauden (n. 3 1/2 kk) aikana tapahtuneista kosteudenmuutoksista keskimäärin 77 % todettiin jo vuorokauden kuluttua sekoittamisesta. Neljän vuorokauden jälkeen tapahtui kosteudenmuutoksia enää hyvin vähän.