Turkish Journal of Field Crops

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EFFECT OF SEEDING RATE ON THE FORAGE YIELDS AND QUALITY IN PEA CULTIVARS OF DIFFERING LEAF TYPES

Abstract

This study aimed to determine the effects of four seeding rates (75, 100, 125 and 150 plant m -2 ) on forage yield and quality of pea cultivars (Pisum sativum L.) of differing leaf types. Two semi-leafless cultivars (Ulubatli and Kirazli), two leafed cultivars (Golyazi and Urunlu) were used in this research. Plant height, plants number per m2 , seeds number per pod, lodging scores, 1000 seed weight, forage yield, DM yield, seed yield, forage CP yield and seed CP yield were determined. According to two years averages, Golyazi had the highest 1000 seed weight, forage yield, DM yield, seed yield, forage CP yield and seed CP yield. Semi-leafless pea cultivars (Ulubatli and Kirazli) had significantly better standing ability than normal leaf cultivars (Urunlu and Golyazi). Increasing seed rates resulted in an increase in plants per m2 , lodging scores, forage yield, DM yield and forage CP yield. However, increasing seed rates caused decrease in seeds per pod and seed CP yield in two years averages.

Keyword: Dry matter yield, Lodging scores, Pisum sativum, Seed yield, Semi-leafless ,

Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding