Previously, Bradyrhizobium japonicum USDA 110 was shown to contain colony morphology variants which differed in nitrogen-fixing ability. Mannitol-utilizing derivatives L1-110 and L2-110 have been shown to be devoid of symbiotic nitrogen fixation ability, and non-mannitol-utilizing derivatives I-110 and S-110 have been shown to be efficient at nitrogen fixation. The objectives of this study were...

Yağış, etkileri en geniş olan iklim parametrelerinden biridir. Tüm yağışlar toprağa sızmaz; bir kısmı buharlaşabilir; başka yüzey akışına dönüşebilir. Depolanan suyun yalnızca kısmı, bitkinin terleme ihtiyaçlarını karşılamak için kökler tarafından alınır. Bu nedenle, etkin yağışı bilmek gerekmektedir. çalışma, yağış miktarını hesaplamak ve tahmini kullanılan farklı yöntemleri karşılaştırmak ama...

A consumer study was conducted to determine palatability ratings of beef tenderloin steaks from USDA Choice, USDA Select, and USDA Select with marbling scores from Slight 50 to 100 (USDA High Select) cooked to various degrees of doneness. Steaks were randomly assigned to 1 of 3 degree of doneness categories: very-rare, medium-rare, or well-done. Consumers (N = 315) were screened for preference ...

This study compared the susceptibility of three blue catfish strains (D&B, USDA 101 and USDA 102) to the parasite Ichthyophthirius multifiliis (Ich). In Trial I, a cohabitation study (all strains stocked communally) was conducted and fish were exposed to theronts at 0, 200, 1000, 5000 or 25 000 theronts fish(-1), respectively. All fish died when exposed to theronts at 5000 or 25 000 theronts fi...

R. G. Bhat, Department of Plant Pathology, University of California, Davis 95616; P. M. Colowit and T. H. Tai, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Crops Pathology and Genetics Research Unit (CPGRU), Department of Plant Sciences, University of California, Davis 95616; M. K. Aradhya, USDA-ARS National Clonal Germplasm Repository, University of Califor...

In 2010, Colorado growers harvested 59,200 acres of potatoes with production valued at $293 million (USDA-NASS, 2011b). Additionally, Colorado was ranked 4 nationally in summer potato yields, 5 in fall yields, and had an estimated average of 390 cwt. per acre (USDA-NASS, 2011a). In the San Luis Valley of Southwestern Colorado alone, where the bulk of the state’s potatoes have historically been ...