Among various production factors for wheat crop, time of sowing and wheat varieties are crucial ones influencing productivity. Onset of various phenophases of wheat crop is greatly related with the prevailing temperature at that time. Any deviation from optimum temperature for onset of phenophase may drastically reduce the crop productivity. Similarly wheat varieties play vital role under different temperature situation. Hence, considering these two aspects a field experiment was conducted on sandy loam soil at Centre of Excellence for Research on Wheat, Sardarkrushinagar Dantiwada Agricultural University, Vijapur to study the "Response of wheat varieties (Triticum aestivum L. and Triticum durum Desf.) to sowing time" in North Gujarat conditions" during rabi season of the year 2012-13. The experiment comprising of twelve treatment combinations was laid out in Split Plot Design with four replications. The treatment consisted of three sowing times i.e., 15 th November (Timely), 1 st December (Late) and 15 th December (Very late) and four wheat varieties (viz., GW 11, GW 173, GW 322 and GDW 1255 (d)). The results of experiment revealed that the plant population at initial and harvest, harvest index were remained unaffected due to different sowing times. Significantly higher Plant height (80.2 cm), number of spikes/m 2 (328.1), length of spike (8.7 cm) number of grains per spike (57.5), 50% heading (65.2), Test weight (52.7), protein content (14.81%) grain (4716 kg ha -1 ) and straw (7068 kg ha -1 ) yield was found when crop sown on 15 th November. The result of mean data of varieties indicated that the different growth parameters viz., plant height, days to 50 per cent heading, days to physiological maturity were significantly influenced and maximum values of these parameters were recorded by wheat variety GW 322. However, plant population at initial and harvest, number of spikes per meter -2 and harvest index were remained unaffected due to different varieties. Significantly higher values of yield attributes viz., plant height (85.1cm), length of spike (9.2cm) number of grains per spike (52.8) and 50% heading (62.7) were observed in variety GW 322 while, test weight (54.2gm) and protein content (14.9%) was recorded significantly higher by variety GW 1255. The wheat variety GW 322 produced significantly higher grain yield 4408 kg ha -1 and straw yield 6612 kg ha -1 . The increase was 0.4, 10.2 and 11.9 per cent in grain yield and 0.4, 10.3 and 11.9 per cent in straw yield as compared to GW 11, GW 173 and GDW 1255, respectively.

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A field experiment was carried out during summer season of 2008 on a loamy sand soil at Regional Research Station, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, District: Banaskantha (Gujarat) to study the eight weed management practices i.e., Unweeded control (W0), Weed free (i.e., Hand Weeding at 20, 40 and 60 DAS) (W1), Hand weeding at 20 and 40 DAS (W2), Interculturing at 20 and 40 DAS (W3), Pre-emergence application of Pendimethalin @ 1.0 kg a.i./ha (Blanket application) (W4), W4 + Interculturing at 20 DAS (W5), W4 + Interculturing at 40 DAS (W6) and W4 + Hand Weeding at 40 DAS (W7) along with two fertility levels i.e., 75% recommended dose of NPK (i.e., 112.5 -37.5 -37.5 NPK kg/ha) (F1) and 100% recommended dose of NPK (i.e., 150 -50 -50 NPK kg/ha) (F2) on okra [Abelmoschus esculentus (L.) Moench.] crop. Results shows that the weeds population at 20 and 40 DAS were found significantly lowest under treatment (W7) i.e., pre-emergence application of pendimethalin @ 1.0 kg a.i./ha (W4) + Hand Weeding at 40 DAS (3.20, 2.75, 2.99 and 5.07 per m 2 ) and (W5) i.e., pre-emergence application of pendimethalin @ 1.0 kg a.i./ha (W4) + interculturing at 20 DAS (2.84, 2.72, 2.58 and 4.60 per m 2 ), respectively. Besides providing weed free condition through the season Hand weeding at 20, 40 and 60 DAS was found more effective in recording the less dry weight of weeds (37.87 g/m 2 and 230 kg ha -1 ) as well as higher weed control efficiency (82.04 and 77.03%). Hand weeding at 20 and 40 DAS and pre-emergence application of pendimethalin @ 1.0 kg a.i. ha -1 + H.W. at 40 DAS were found at par with this respect.