Abstract
The study was conducted at student’s Experimental Farm, Department of Agronomy, Sindh Agriculture University Tandojam to evaluate growth and yield of sunflower varieties as affected by seed rates during 2015. The experiment was laid out three replicated randomized complete block design (RCBD) Factorial. The treatments included 03 seed rates and 03 sunflower varieties. Net plot size was used in the experiment 3m x 3m = 9m2. The seed rates were kept as Factor A (S1 = 5 kg, S2 = 7.5 kg and S3 = 10 kg ha-1) and varieties as Factor B (V1 = HO-1, V2 = NKS–278 and V3 = Hysun - 38). In the present study sunflower varieties tested with seed rates, showed maximum mean plant height (125.33) cm, stem girth (6.28) cm, seed weight head-1 (44.94) g, seed index 1000 seed weight (69.89) g, head diameter (33.37) and seeds head-1 (690) at the seed rate 5 kg ha-1. Maximum mean seed yield kg ha-1 (2276.8) and the maximum mean plant population m2 (14.89) were recorded at the seed rate 10 kg ha-1. Whereas, minimum mean stem girth cm (5.96), head diameter cm (31.02), seeds head-1 (610), seed weight head-1 (34.58), seed index 1000 seed weight g (52.33) were recorded at the seed rate 10 kg ha-1. And minimum mean seed yield kg ha-1 (1836.7) and plant population m2 (7.22) were recorded at seed rate 5 kg ha-1. In case of varieties maximum mean of plant population m2 (11.78), plant height cm (184.8), stem girth cm (7.83), Head diameter cm (37.28), seeds head-1 (1028), seed weight head-1 g (64.63), seed index 1000 seed weight g (63.78) and seed yield kg ha-1 (2061.7) were recorded in variety HO-1 whereas minimum mean of plant population m2 (10.22), plant height cm (89.41), stem girth cm (4.54), seeds head-1 (433), seed weight head-1 g (26.67), seed yield kg ha-1 (1990) were recorded in variety Hysun-38 and minimum head diameter cm (27.11), Seed index 1000 seed weight g (59.00) were observed in the variety NKS-278. Keywords: Growth; Yield; Seed rates http://dx.doi.org/10.19045/bspab.2017.600127
Highlights
Were recorded at seed rate 5 kg ha-1
Factor A consisted of 3 Seed Rates as; S1 = 5 kg ha-1 S2 = 7.5 kg ha-1, S3 = 10 kg ha-1 and Factor-B consisted of 3 varieties; V1 = HO-1, V2 = NKS-278 and
Was observed in variety Ho-1 and minimum plant population (10.22) m2 was recorded in variety Hysun 38
Summary
Were recorded at seed rate 5 kg ha-1. In case of varieties maximum mean of plant population m2. Populaces of 60,000 to 75,000 plants ha-1 at column spacing of 35 to 60 cm are prescribed for dry land creation [5]. The seeding rate in sunflower is affected by the dividing in the middle of lines and the separation between plants in succession. The seed rate is a critical element to impact crop administration components and yields, mostly low plant populaces can diminish product by lessening seed yield and oil focus and vast heads, from low plant populace, may oblige longer to dry down and hard to gather [8]. Material and methods The study was carried out at Students’ experimental farm, Department of Agronomy, Sindh Agriculture University Tando jam to evaluate growth and yield of sunflower varieties as affected by seed rates. The data was statistically analyzed through the MSTAT-C software; mean comparison was done using Duncan Multiple
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