scholarly journals Growth, nodulation, and yield of soybean and associated weeds as affected by weed management

2008 ◽  
Vol 26 (4) ◽  
pp. 855-863 ◽  
Author(s):  
M.T. Abdelhamid ◽  
I.M. El-Metwally
Keyword(s):  
Seed Yield ◽  
Weed Management ◽  
Field Experiments ◽  
Growth Yield ◽  
Dry Weight ◽  
The Other ◽  
Research Centre ◽  
Yield Attributes ◽  
Soybean Plants ◽  
Total Dry Weight

Two field experiments were conducted at the experimental farm of the National Research Centre at Shalakan, Kalubia Governorate, Egypt, during 2006 and 2007 seasons, to study the effect of three pre-emergence herbicides, prometryn [at the rate of 0.75, 1.5 and 2.25 kg ha-1], oxadiargyl [at the rate of 240, 480 and 720 g ha-1] and butralin [at the rate of 1.20, 2.40 and 3.36 kg ha-1], two hand hoeing treatments and a nonweeded check, on weed infestation, nodulation, growth, yield and yield attributes of soybean plants. Two hand hoeing treatments resulted in the highest weed depression expressed as the lowest fresh and dry weights of broadleaved, grassy and total weeds. The reduction percentage in weed dry matter compared to the nonweeded treatment was 98.3, 92.64 and 96.9% in broadleaved, grassy and total weeds, respectively. Application of the three herbicides at higher or recommended doses significantly reduced fresh and dry weight of the weeds compared to the nonweeded treatment. The results indicated that all the three herbicides at rates higher than the recommended markedly decreased the number, fresh and dry weight of nodules as well as root, shoot and total dry weight plant-1, while application of two hand hoeing treatments significantly increased these traits. Two hand hoeing treatments and pre-emergence herbicides at the recommended rates markedly increased soybean yield and its attributes. Two hand hoeing treatments gave the highest values of number of pods per plant-1, weight of pods per plant-1 and number of seeds per plant-1 by 140.7, 150.0 and 59.8%, respectively, compared to the nonweeded treatment. On the other hand, oxadiargyl at the recommended rate (480 g ha-1) was the best treatment for promoting seed yield (g plant-1), seed yield (kg ha-1) and biological yield (g plant-1) compared to the nonweeded treatment by 87.3, 85.0 and 88.2%, respectively. Prometryn at the rate of 1.50 kg ha-1, followed by two hand hoeing treatments, produced the highest shoot and seed protein percentage as well as seed oil percentage, compared to the other weed control treatments.

scholarly journals Evaluation of Sesame Yield and Yield Component under Different NPS Fertilizer Rates in Western Tigray, Ethiopia

2020 ◽  
pp. 1-7
Author(s):  
Teame Shimgabr ◽  
Negasi Gebereslasie ◽  
Haile Alene ◽  
Welesenbet Haftu ◽  
Nebyu Tsegay
Keyword(s):  
Grain Yield ◽  
Seed Yield ◽  
Field Experiments ◽  
Growth Yield ◽  
Yield Component ◽  
Yield Attributes ◽  
Significant Difference ◽  
Fertilizer Rates ◽  
Different Levels ◽  
Number Of Branches

Field experiments were conducted in three sites of Western Tigray, Ethiopia. The experiments aimed at identifying optimum the rate of the newly introduced NPS fertilizer impact with different levels on growth, yield attributes, yield and economics of sesame in vertisols of Western Tigray at the Humera station, Banat and Kebabo Kafta Humera and Tsegede Wereda’s. The treatments consisted of six levels of NPS 0, 50, 100, 150, 200 and 250 kg ha-1 and one blanket recommendation N and P was applied. The experiment was laid out in an RCBD with three replications. Yield of Sesame and yield related components showed significant difference (p < 0.001) compared to control. Results showed that number of branches plant-1, length of pod bearing zone (cm), plant height (cm), number of capsules plant-1, seeds capsule-1 and seed yield was significant differences at (P< 0.001) Grain yield increases from 444.8 kg ha-1 to 671.9 kg ha-1 as NPS and 444.8 kg ha-1 to 628 kg ha-1 as NP increases from 0 (control) to 100 kg ha-1 NPS and 41 kg N and 46 kg P205 ha-1 respectively. But NPS was not significant with blanket recommendation of N and P (41 kg N and 46 kg P205 ha-1), therefore no need to replace the NP by NPS fertilizer in the study area.

scholarly journals Evaluation of different weed management practices in dry direct seeded spring rice at Baniyani, Jhapa, Nepal

2020 ◽  
Vol 5 (4) ◽  
pp. 535-542
Author(s):  
Rakshya Poudel ◽  
Santosh Marahatta ◽  
Santosh Kandel ◽  
Purnima Puri
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Rice Variety ◽  
Growth Yield ◽  
Dry Weight ◽  
Yield Attributes ◽  
Net Returns ◽  
Weight Growth ◽  
Agriculture Modernization

A field experiment was conducted during the spring season of 2020 to evaluate the different weed management practices in dry directed seeded spring rice under Prime Minister Agriculture Modernization Project (PMAMP) super zone at Baniyani, Jhapa. The experiment was laid out in randomized complete block design (RCBD) with seven weed management related treatments and three replications. The treatments consisted of pre-emergence application of Pretilachlor, pre-emergence application of Pendimethalin, pre-emergence application of Pretilachlor fb post-emergence butachlor pre-emergence application of Pendimethalin fb post-emergence Bispyribac Na, Sesbania co-culture along with pre-emergence application of Pendimethalin along with two control treatments (weedy free and weedy check). The rice variety Hardinath-1 was used in the experiment. Data regarding the weed flora, weed density, weed dry weight, growth, yield attributes and yield were recorded and analyzed. The highest number of effective tillers per m2 (371.51) and number of grains per panicle (145.43) were obtained in Pendimethalin treated plot and were statistically as par with Sesbania co-culture + Pendimethalin (363.44 m-2 and 140.54 respectively). Higher and statistically similar grain yield was observed in Sesbania co- culture + Pendimethalin (4870kg ha-1) and Pendimethalin treated plots (4780 kg ha-1). The experiment concluded that there was reduction in yield by 66.78 percent due to presence of weed as compared to weed free. Pre-emergence application of Pendimethalin was most beneficial in terms of gross returns, net returns and B:C ratio compared to other weed management practices and hence was most economical.

Effect of weed control treatments and hill-spacing on soybean and associated weeds

2004 ◽  
Vol 52 (1) ◽  
pp. 81-93 ◽  
Author(s):  
A. H. Galal
Keyword(s):  
Weed Control ◽  
Seed Yield ◽  
Significant Influence ◽  
Field Experiments ◽  
Growth Yield ◽  
Dry Weight ◽  
Plant Weight ◽  
Plant Seed ◽  
Yield And Quality ◽  
Seed Index

Two field experiments were carried out at the Experimental Farm of Assiut University, during the 2000 and 2001 summer seasons, to study the effect of three hill spacings (5, 10 and 15 cm) and six weed control treatments on the associated weeds, plant growth, yield and quality of soybean. The weed control treatments were carried out with trifluralin, linuron, pendimethalin, bentazon and hand hoeing, with an unweeded treatment as the control. All the weed control treatments exerted a significant influence on the dry weight of weeds. Hand hoeing and pendimethalin treatment significantly decreased the dry weight of dicot and monocot weeds as compared to the unweeded treatment. Hand hoeing gave the lowest value of the dry weight of total weeds and the highest efficiency percentage. In general, the significantly lowest dry weight of total weeds was recorded for densely sown soybeans. The weed control treatments exerted a significant influence on all the characters under study (plant height, weight of pods and seeds/plant, number of plants at harvest, seed yield/ha). The height of the first pod was lowered by hand hoeing and the application of pendimethalin increased the number of pods/plant, while the highest values of number of branches/plant, seed index, oil and protein contents were obtained after linuron application. wider spacing produced higher values for the number of pods and branches/plant, weight of pods and seeds/plant, seed index and protein content and lowered the height of the first pod as compared to plants sown at closer spacing. The latter produced the highest values of number of plants/ha, seed yield/ha and oil content at harvest. The first order interaction exerted a significant influence on all the characters studied, the highest seed yield/ha (2728.6 kg) being obtained from sowing plants at 5 cm combined with hand hoeing.

Effect of sink size on the pod and seed characteristics of soya beans (Glycine max (L.) Merr.) in the lowland tropics

1983 ◽  
Vol 100 (2) ◽  
pp. 285-292 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Field Experiments ◽  
Dry Weight ◽  
Tropical Conditions ◽  
Glycine Max L ◽  
Sink Size ◽  
Total Dry Weight ◽  
Seed Characteristics ◽  
Number Of Seeds

SUMMARYThe size of the sink on two indeterminate (cv. Hampton and cv. TGM 119) and two determinate (cv. Bossier and cv. TGM 294) cultivars of soya beans were reduced by continuously limiting the number of pods developing at each fruiting node to either one or two, starting from 2 weeks after anthesis, in three field experiments (early 1980, late 1980 and early 1981). Thiswas in order to evaluate the effects of sink size on the development of pod and seed characteristics as well as to quantify the inter-relationships between these characters under humid tropical conditions.Persistently reducing the number of pods developing at each fruiting node consistently significantly reduced the number of pods per plant, the pod and seed dry weights per plant, the total number of seeds per plant and the harvest index (seed weight as a proportion of total dry weight) in all cultivars when compared with the control. On the other hand, the treated plants of all cultivars generally had longer pods, heavier individual pods and seeds, more seeds per podand greater leaf area and leaf dry weight as well as greater specific leaf weight than the control plants. Compensation indices (percentage increases in size over control) were 25–30% for weight per pod and seed weight per pod; 11–16% for weight per seed and number of seeds per pod and 2–5% for pod length in the treated plants.Most of the characters measured (except individual weight of pods and seeds, seed weight per pod and number of seeds per pod) had significant interaction effects of sink size, cultivar and season; season had the highest correlation ratio, followed by cultivar, and sink size had the least. Also, nearly all components of seed yield were positively highly significantly correlated with one another; the number of seeds per pod and the number of pods per plant accounted for 76% of the variation in seed dry weight per plant.It would seem therefore that under the prevailing humid tropical conditions, the most important component of seed yield in soya bean is the number of seeds per pod, as affected by the sink size.

Effect of phosphorus and sulphur on yield attributes, yield, nodulation and nutrient uptake of green gram [Vigna radiate (L.) wilczek]

2016 ◽  
Author(s):  
S. K. DAS
Keyword(s):  
Nutrient Uptake ◽  
Seed Yield ◽  
Field Experiments ◽  
Negative Impact ◽  
Block Design ◽  
Dry Weight ◽  
Green Gram ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Four Levels

Field experiments were conducted during pre kharif 2010, 2011 and 2012 to study the effects of phosphorus and sulphur on yield parameters, yield, nodulation and nutrient uptake of green gram. The experiment was laid out in a factorial randomized block design with three replications having eight treatment combinations viz. four levels of sulphur (0, 20, 40, and 60 kg ha-1) as factor A and two levels of phosphorous (30 and 60 kg ha-1) as factor B. Experimental results revealed that yield attributing characters and seed yield of green gram were significantly influenced by phosphorus, sulphur and interaction effects of these two factors. Application of higher dose of phosphorus (60 kg ha-1) and increasing levels of sulphur up to 40 kg ha-1proved to be the best in improving the yield attributing characters and seed yield (1.62t ha-1)of green gram. Sulphur applied beyond 40 kg ha-1could not increase the parameters further. Application of sulphur 20 kg ha-1 significantly increased the active nodule no. and nodule dry weight of green gram and there after applied S beyond 20 kg ha-1the mean nodule production reached a more or less plateau pattern and application of lower dose of phosphorus without sulphur drastically reduced the nodule dry weight. Interaction of higher dose of phosphorus and higher dose S found to have a negative impact on yield. Application of varying levels of phosphorus and sulphur significantly improved the nutrient uptake by green gram in a sulphur deficient soil. Sulphur acted synergistically with nitrogen and increased the uptake of other nutrients. Application of 60 kg P205 ha-1 and 40 kg Sha-1 proved to be most economic in green gram with NPV 4.59.

scholarly journals Response of Seed Collection from Different Parts on the Growth and Yield of Lentil

1970 ◽  
Vol 45 (3) ◽  
pp. 197-204
Author(s):  
A Khatun ◽  
MAH Bhuiyan ◽  
MS Alam
Keyword(s):  
Key Words ◽  
Seed Yield ◽  
Significant Variation ◽  
Seed Weight ◽  
Field Experiments ◽  
Growth Yield ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Seed Collection ◽  
Different Parts

Field experiments were carried out to determine the effects of seeds collected from different parts on growth, yield and yield attributes of lentil. Lentil seeds of three varieties (BARI Masur-2, BARI Masur-3 and BARI Masur-4) were collected from different parts i.e. P1: collection of pods from upper parts of lentil plants, P2: collection of pods from middle parts of lentil plants, P3: collection of pods from lower parts of lentil plants prior to harvesting. All the seeds were stored in earthen pot until conducting the laboratory study. Non-significant variation was observed in three varieties of lentil for most of the parameters studied. The highest plant height, pods plant-1, seeds pod-1, 1000- seed weight and seed yield were observed in BARI Masur-4 and the lowest in BARI Masur-2. Seeds collected from middle parts of lentil recorded the highest pods plant-1, seeds pod-1 and seed yield (804 kg ha-1 in 2004-05 and 838 kg ha-1 in 2005-06). BARI Masur-3 seeds were collected from middle parts and BARI Masur-4 from lower parts recorded higher seed yield (1003 kg ha-1 in 2004-05 and 1012 kg ha-1 in 2005-06 for BARI Masur-3 x P2, 1061 kg ha-1 in 2004-05 and 856 kg ha-1 in 2005-06 for BARI Masur-4 x P3). Key words: Lentil; Seed collection; Variety; Seed yield. DOI: 10.3329/bjsir.v45i3.6528Bangladesh J. Sci. Ind. Res. 45(3), 197-204, 2010

scholarly journals Correlation studies for seed yield and yield attributes in soybean [Glycine max (L.) Merrill]

2020 ◽  
Vol 15 (2) ◽  
pp. 92-95
Author(s):  
P.S. Chavan ◽  
H.V. Kalpande ◽  
S.V. Kalyankar ◽  
S.B. Borgaonkar
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Block Design ◽  
Crop Improvement ◽  
Dry Weight ◽  
Yield Attributes ◽  
Relative Contribution ◽  
Randomized Block Design ◽  
Glycine Max L ◽  
Total Dry Weight

An investigation entitled as “Correlation for yield and yield contributing traits in soybean [Glycine max (L).Merrill.] was conducted during Kharif 2018 at Instructional Farm, Department of Agriculture Botany, Vasantrao Naik Marathwada Agriculture University, Parbhani. The experiment was laid out in Randomized Block Design with three replications and seven treatments viz., T1-untreated seeds,T2-Polymer coating, T3-T2+Vitavax, T4-T3+GA3 100ppm, T5-T3+CCC 100ppm, T6-T3+, NAA 50ppm, T7- T3+IAA 50ppm. Seed yield is a complex character and is dependent on number of component characters. Therefore, study of relationship of characters with each other and with seed yield become more important in crop improvement programme. Therefore, it is essential to find out relative contribution of each of the component character with yield. In present study yield and yield contributing character of seed yield was positive and significant correlated with field plant height, number of branches per plant, chlorophyll content, leaf area, germination per cent, moisture per cent, total dry weight, 100 seed weight, oil content, protein content, harvest index and no. of seeds per pod. The results also obtained from this study days to 50 per cent flowering and days to harvest are negative significant to other yield and yield parameter.

Effect of planting pattern and N splits on yield attributes, yield and quality of rainfed sunflower (Helianthus annuus L.)

2003 ◽  
Vol 51 (2) ◽  
pp. 157-162 ◽  
Author(s):  
M. Vijayakumar ◽  
P. Subbian ◽  
A. C. Lourduraj ◽  
R. Selvaraju
Keyword(s):  
Seed Yield ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Growth Yield ◽  
Quality Parameters ◽  
Planting Pattern ◽  
Yield Attributes ◽  
North East ◽  
Yield And Quality

Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, India during the North East Monsoon (October-December) seasons of 1997 and 1998 in a split plot design to study the effect of planting pattern and N splits on the yield attributes, yield and quality of rainfed sunflower. The main plot consisted of three plant populations (133,333 plants ha-1, 111,111 plants ha-1 and 88,888 plants ha-1) and the sub-plot treatments of six N split levels. The results revealed that the yield attributes of sunflower were higher at the closest spacing of 30 × 25 cm than at the widest spacing of 30 × 37.5 cm. The seed yield was higher at closer (30 × 25 cm) spacing in 1997 and at wider spacing (30 × 37.5 cm) in 1998. In both years the split application of nitrogen resulted in higher growth, yield attributes, seed yield and quality parameters when compared to full basal application.

scholarly journals Impact of Different Water Management Regimes on the Growth, Productivity, and Resource Use Efficiency of Dry Direct Seeded Rice in Central Punjab-Pakistan

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1151
Author(s):  
Sadam Hussain ◽  
Saddam Hussain ◽  
Zubair Aslam ◽  
Muhammad Rafiq ◽  
Adeel Abbas ◽  
...  
Keyword(s):  
Grain Yield ◽  
Hybrid Rice ◽  
Water Productivity ◽  
Dry Weight ◽  
Cost Ratio ◽  
Yield Attributes ◽  
Benefit Cost Ratio ◽  
Direct Seeded ◽  
Total Dry Weight ◽  
Benefit Cost

Dry direct-seeded rice has been shown to save irrigation water and labor. Nonetheless, irrigation management in dry direct-seeded rice has received very little attention. Here, we examined the potential of different irrigation regimes: aerobic rice (AR), alternate wetting and drying (AWD) and continuous flooding (CF) in dry direct-seeded rice cultivation on two rice cultivars (Pride-1 (hybrid indica) and NB-1 (inbred indica)). Growth, yield attributes, grain yield, total water input, water productivity and benefit cost ratio were measured. Our results showed that AR saved 11.22 and 28.40%, and 5.72 and 32.98% water compared with AWD and CF during 2018 and 2020, respectively. There was a significant difference in grain yield among treatments and cultivars. AWD and CF produced statistically same total dry weight and grain yield, while AR reduced the total dry weight by 31.34% and 38.04% and grain yield by 34.82% and 38.16% in comparison to AWD and CF, respectively, across the years. Except for 1000-grain weight and harvest index in AWD and CF, further differences in total dry weight and grain yield among irrigation treatments were primarily correlated with variations in yield attributes. Among the cultivars, hybrid rice performed better than inbred rice. Over the two-year period, hybrid rice increased total dry weight, grain yield, and water productivity by 9.28%, 13.05%, and 14.28%, respectively, as compared to inbred rice. Regarding water productivity (WP), the maximum percentage (40.90 and 26.53%) was recorded for AWD compared to AR and CF. Among cultivars, more water productivity (14.28%) was calculated for hybrid rice than inbred one. Chlorophyll and carotenoid contents, leaf area index and crop growth rate contributed to higher grain yield of hybrid rice under AWD and CF. In contrast to WP, the maximum benefit cost ratio was estimated to be higher for CF than that of AR and AWD. For the cultivars, the maximum value (2.26 in 2018 and 2.32 in 2020) was calculated for hybrid rice compared with the inbred one. In conclusion, these results suggests that AWD with maximum WP and CF with maximum BCR could be more efficient approaches than AR. Under CF, hybrid rice cultivars with higher yield and yield-related attributes, WP and BCR performed better.

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