the present experiment was carried out to assess the general combining ability (gca) and specific combining ability (sca) of six important commercial cultivars of gossypium hirsutum l. of venezuela, viz., ‘deltapine 16’, ‘tamcot-sp-21’, ‘cabuyare’, ‘stoneville’, ‘ospino’ and ‘acala 90-1’ and their 15 f1 hybrids, respectively. the data were analyzed using griffing’s model i method ii. significan...

This study was conducted to determine whether selecting an optimum sowing date couldimprove yield. The experiment consisted of sowing a film-covered, drip-irrigated cotton field onfour sowing dates from April to May in 2011-2012 at the Agrometeorological ExperimentalStation of Wulanwusu, which was in an arid region of north-western China. Late sowing datesproduced less yield and water-use effic...

Identification of the last effective boll population allows informed decisions for termination of insecticide and application of harvest aids. However, the current COTMAN cutout reference, i.e., NAWF=5 (Oosterhuis et al., 1999), may need to be changed for ultra-narrow-row (UNR) cotton. This study is part of a multi-state project which has an overall objective of determining the main-stem node n...

3 Bonsignore, A., S. Pontremoli, E. Grazi, and M. Mangiarotti, Biochem. Biophys. Research Communs., 1, 79 (1959). 4 Venkataraman, R., and E. Racker, J. Biol. Chem., 236, 1876 (1961). 5 Prandini, B. D., and J. A. Lopes do Rosario, Boll. soc. ial. biol. sper., 36, 1224 (1960). 6 Grazi, E., M. A. Mangiarotti, and S. Pontremoli, in press. 7 Bonsignore, A., S. Pontremoli, G. Fornaini, and E. Grazi, ...

Identification of the last effective boll population allows informed decisions for termination of insecticide and application of harvest aids. However, the current COTMAN cutout reference (i.e., NAWF=5) indicates physiological cutout (Oosterhuis et al., 1999) may need to be changed for ultra-narrow-row (UNR) cotton. This study is part of a multi-state project the overall objective of which is t...

In order to study the detection effect of cotton boll opening after spraying defoliant, and solve problem low efficiency traditional manual methods for use this proposed a method improved YOLOv5x+ algorithm. Convolution Attention Module (CBAM) was embedded Conv enhance network’s feature extraction ability, suppress background information interference, enable network focus better on targets in p...

the seasonal abundance patterns of the cotton aphid, aphis gossypii glover, in cotton fields at gorgan in northern iran were studied during two growing seasons of 2002 and 2003. the spatial distribution of different developmental stages and morphs of the aphid was described by fitting data to poisson (random) and negative binomial (aggregated) dis-tributions, and calculating the dispersion indi...