4 research outputs found
The system of soil protection and general balance of main nutrient elements in perennial plantations of semi-desert natural soil zone of Armenia
Received: March 27th, 2022 ; Accepted: June 3rd, 2022 ; Published: July 5th, 2022 ; Correspondence: [email protected] aim of the research is to study the biological removal of the main nutrient elements
from the most common technical grape varieties, as well as from apricot and peach plantations in
the farms, situated on semi-desert natural soils of Armenia, to identify the extent of their input
and losses due to natural factors and to calculate the balance associated with the soil conservation
system in the absence of comprehensive fertilization. In the inter-row spaces of all fruit
plantations and even vineyards of the republic, grass cover of productive significance has been
established (4.5–6.5 t ha-1 yield of air-dry grass), through which the removal of nutrient elements
is 2–3 times higher than the biological removal through trees and vines. The research was
conducted in 2015–2020, in the grape, apricot and peach plantations of the semi-desert natural
zone of Armenia (Armavir region), where the irrigation norm is 5,000 m3 ha-1
, and the atmospheric
precipitation is 256 mm, through which 40 kg ha-1 N, 2 kg ha-1 P2O5, and 44 kg ha-1 K2O enter
the soil. The losses due to erosion and washing away are N - 12 kg ha-1
, P2O5 - 7 kg ha-1
,
K2O - 75 kg ha-1
. The balance of nutrient elements in all plantations is negative, nitrogen in
plantations with industrial grass cover is 154, P2O5 - 52, K2O - 311, and in the system of black
fallow - 15, 16 and 85 kg ha-1
, respectively. The negative balance of nitrogen in apricot and peach
plantations is 121, P2O5 - 44, K2O - 296 kg ha-1
Production removal of the main nutrient elements from winter wheat and barley crops in the conditions of the Ararat Valley of Armenia
Received: February 1st, 2022 ; Accepted: February 19th, 2023 ; Published: February 20th, 2023 ; Correspondence: [email protected] aim of the research is to identify the extent of production removal of the main
nutrient elements in the irrigated grain-growing lands of Armenia, to optimize the norms of
organo-mineral fertilizers, to stabilize the yield of plants and prevent dehumification. The field
experiments were carried out in the conditions of the Ararat Valley on winter wheat and barley
in 2020–2022. The production removal of nitrogen by 5–7 t ha-1 grain of winter wheat and
9.6–13.3 t ha-1 straw varies between 155–247, P2O5: 60–88, K2O: 134–197 kg ha-1 , and the
amounts removed by barley grain 4.5–6.5 t ha-1 and straw 6.9–9.7t ha-1 were 122–194, 49–77 and
106–159 kg ha-1
, respectively. The amounts of nitrogen and potassium production removal from
plant crops are about 2 times higher than the doses of applied fertilizers, and the amount of
phosphorus is almost balanced by these doses
Organization of seed breeding activities for leguminous crops and introduction of new varieties in conditions of piedmont and mountainous zones of Armenia
The article presents the results of breeding new leguminous crop varieties at the Scientific Center of Agriculture of the Republic of Armenia and the study results related to their testing and introduction in the piedmont and mountainous zones of the republic. Upon the findings of field experiments and laboratory research conducted throughout 2020-2022, it has been disclosed that the piedmont and mountainous zones of the republic are quite favorable for the growth and development of new varieties of chickpea (Stella), lentil (Erebuni), pea (Kangun) and groundnut (Arina), which were bred at the scientific center with further subjection to state varietal testing. Meanwhile, through the study results, it has been proved, that all mentioned varieties have ensured higher yield capacity and protein content as compared to other regionalized crops in those zones, and thus, it has been recommended to introduce them in a wide range of farm households for further cultivation
Organization of seed breeding activities for leguminous crops and introduction of new varieties in conditions of piedmont and mountainous zones of Armenia
The article presents the results of breeding new leguminous crop varieties at the Scientific Center of Agriculture of the Republic of Armenia and the study results related to their testing and introduction in the piedmont and mountainous zones of the republic. Upon the findings of field experiments and laboratory research conducted throughout 2020-2022, it has been disclosed that the piedmont and mountainous zones of the republic are quite favorable for the growth and development of new varieties of chickpea (Stella), lentil (Erebuni), pea (Kangun) and groundnut (Arina), which were bred at the scientific center with further subjection to state varietal testing. Meanwhile, through the study results, it has been proved, that all mentioned varieties have ensured higher yield capacity and protein content as compared to other regionalized crops in those zones, and thus, it has been recommended to introduce them in a wide range of farm households for further cultivation