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The present paper presents the results obtained within a multifactorial experience at the Research and Development Station of the University of Craiova, SCDA Caracal, in the period 2021-2022. The biological material was represented by four pea varieties (Omega, Tiara, Favorit and Trinity), each of them being sown in two different seasons. The variability of production, plant height and some elements of productivity were monitored, such as: number of plants/m2, number of pods/plant, length of pods, number of grains in pod and weight of 1000 grains. The results obtained showed a high variability, both in terms of production and productivity elements. Thus, the highest average production value was recorded by the Omega variety (4500 kg/ha) and the lowest one, Trinity (3635 kg/ha). The mass of 1000 grains had average values between 190.8 g (Omega) and 135.9 g (Tiara). Also, the ratio between plant weight and grains weight recorded average values from 1.74 (Tiara) and 1.59 (Favorit). These results confirm the very good suitability of the researched pea varieties for cultivation in the environmental and soil conditions of the South-West area of Oltenia. [ABSTRACT FROM AUTHOR]

Many studies in the world showed that nitrogen fertilization, seeding rate, planting data and planting depth affect the yield and its components (Jonhson et. at.. 1988, Blue et al., 1990). The studies were performed at Agricultural Research and Development Station- Şimnic, on a brown-reddish soil. During three years (2004-2006) was performed an experiment with two factors and fifth graduations: like A factor was the variety with the graduations: a1=Simnic 30, a2=Dropia, a3=Flamura85, a4=Alex, a5=Rapid and like B factor was seeding rate with: b1=100 g.k/m², b2=200 g.k/m², b3=300 g.k/m², b4=400 g.k/m², b5=550 g.k/m². The yield was determinate in the field and 1000 kernels weight value in laboratory. On average, in three years, 300 g.k/m² and 400 g.k/m² assured yields at the same level with check variety suggesting that the losses (234 kg/ha, respectively 286 kg/ha) are not significant. Şimnic30, Dropia, Flamura85 and Alex varieties had a similarly behavior. Significant diminishes of the yield were recorded at 100 g.k/m² comparative with 550 g.k/m² as follow: 21%, 17%, 23% respectively 19%. The only variety that, on three years average, presented significant yield diminishes at 100 g.k/m² (25%) as well as at 200 g.k/m² (20%) was Rapid variety. An hypothetic calculation for seeding rate at varieties with 1000 kernel weight by 40 g and cultural value by 9800 (G=98%, P=-100%) show us that, practically, the amount of seeds for initiate a crop is half at 300 g.k/m² comparatively with 550 g.k/m² . Under ARDS-Simnic conditions, tested varieties presented the highest yields at 550 g.k/m² but these were statistically assured only against 100 g.k/m². The only exception was recorded by Rapid variety than recorded yield gain at 550 g.k/m² was superior against all others densities. Subsequently, we recommend for this variety only 550 g.k/m² seeding rate. Following obtained results we can recommend for Şimnic30, Dropia, Flamura85 and Alex to be planting at less than 550 g.k/m² this involving lower amount of seed and consequently lower price for initiate a crop. [ABSTRACT FROM AUTHOR]