scholarly journals RESPONSE OF YOUNG SOUR CHERRY TREES TO WOODCHIP MULCH AND DRIP IRRIGATION

Author(s):  
Daina Feldmane

The productivity of sour cherries grown in Latvia is insufficient. Yielding of sour cherries can be advanced providing appropriate soil moisture and control of diseases. Cherry leaf spot as well as spur and twig blight are the most important sour cherry diseases which cause economical losses of the yield. The influence of woodchip mulch and drip irrigation on sour cherry yielding and resistance to the diseases is investigated. The drip irrigation and woodchip mulch increased the yield of cherries. The cultivar ‘Bulatnikovskaya’ was the most productive. Drip irrigation slightly improved resistance to cherry leaf spot for the cultivars ‘Zentenes’, ‘Orlica’ and ‘Tamaris’.

2015 ◽  
Vol 7 (2) ◽  
pp. 250-252 ◽  
Author(s):  
Maria BOROVINOVA ◽  
Vilina PETROVA

The investigations were made in the experimental sour cherry orchard from the Institute of Agriculture, Kyustendil, Bulgaria, during the period 2010-2014, in order to compare conventional and integrated sour cherry protection against cherry leaf spot and cherry fruit fly. Two variants were investigated, with two different treatment approaches for the control of cherry leaf spot and cherry fruit fly. Variant 1 – cherry leaf spot was controlled by protective treatments with dodin and tebuconazole + trifloxystrobin and cherry fruit fly was controlled by treatments with deltametrin and thiacloprid, independently of density. Variant 2 - cherry leaf spot was controlled by post-infection (curative) treatments with tebuconazole + trifloxystrobin and cherry fruit fly was controlled by treatments based on biological threshold: 10-11 cherry fruit fly females caught in traps up to the moment for chemical treatment. It was established that Blumeriella japii can be successfully controlled by post-infection treatments and by this the number of insecticide treatments was reduced. The treatments against cherry fruit fly can be avoided or reduced when the attack control is based on the biological threshold established in the studied area.


2015 ◽  
Vol 7 (2) ◽  
Author(s):  
Maria BOROVINOVA ◽  
Vilina PETROVA

Plant Disease ◽  
2013 ◽  
Vol 97 (7) ◽  
pp. 891-896 ◽  
Author(s):  
Imre J. Holb

A 3-year study was conducted to determine the effect of five sanitation treatments on leaf litter density (LLD), leaf spot incidence, and percent defoliation on two cultivars (‘Újfehértói fürtös’ and ‘Érdi bőtermő’) in two sour cherry orchards: one managed by integrated pest management principles with conventional fungicides and the other managed organically. The following sanitation treatments were compared: sprays of urea or lime sulfur in autumn, removing fallen leaves after leaf fall, straw mulch cover in late winter, sprays of urea or lime sulfur followed by mulch cover, removing fallen leaves followed by mulch cover, and a nonsanitized control. In both orchards and all years, LLD decreased by 2 to 28% in all treatment plots from early December to mid-May. LLD reduction was two to four times higher in the organic orchard compared with the integrated orchard. All treatments, except the lime sulfur or urea treatment alone, resulted in significant (P < 0.05) reduction of LLD in both the integrated and organic orchards compared with nonsanitized plots. Only leaf removal alone or in combination with mulch significantly (P < 0.05) reduced cherry leaf spot incidence and percent defoliation (by 11 to 70% and 15 to 72%, respectively) compared with nonsanitized plots. The application of these sanitation treatments in orchard management practices is discussed.


Plant Disease ◽  
2003 ◽  
Vol 87 (5) ◽  
pp. 471-477 ◽  
Author(s):  
Phillip S. Wharton ◽  
Amy Iezzoni ◽  
Alan L. Jones

A detached leaf disk assay was developed for screening sour cherry (Prunus cerasus) cultivars for resistance to cherry leaf spot (Blumeriella jaapii). This assay was used to characterize the events occurring in cv. Montmorency (susceptible) and cv. GiSelA 6 [GI 148-1] (resistant) host-pathogen interactions, and to develop a disease scoring scheme to categorize disease severity in sour cherry trees. Forty-three seedlings grown from seeds collected in Russia were screened for resistance using the scoring scheme. Cross infection studies were also carried out with leaf spot isolates from four other Prunus species. These studies were made possible by the development of a new method of culturing B. jaapii isolates, using cherry fruit agar. This method enabled large amounts of inoculum to be produced within 2 weeks rather than a couple of months as required previously. In ‘Montmorency’, disease symptoms were first observed 4 days postinoculation (dpi), with the appearance of small white spots on the undersides of inoculated leaves. These spots gradually grew, producing erumpent spore masses in acervuli approximately 7 dpi. In ‘GI 148-1’, disease symptoms were also first observed 4 dpi, with the appearance of small transparent lesions. In the majority of cases, these lesions did not increase in size; however, acervuli occasionally were formed approximately 8 dpi. These contained small cirrhi and were often surrounded by an abscission zone. Of the sour cherry seedlings tested, only ‘Almaz’ open pollinated (o.p.) R1(1) was rated as resistant. ‘Almaz’ o.p. R1(1) and ‘GI 148-1’ were also rated as resistant to leaf spot isolates from other Prunus species. These results and the implications for breeding resistant sour cherry cultivars are discussed.


Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1881
Author(s):  
Aziz Oukaira ◽  
Amrou Zyad Benelhaouare ◽  
Emmanuel Kengne ◽  
Ahmed Lakhssassi

The basic need common to all living beings is water. Less than 1% of the water on earth is fresh water and water use is increasing daily. Agricultural practices alone require huge amounts of water. The drip technique improved the efficiency of water use in irrigation and initiated the introduction and development of fertigation, the integrated distribution of water and fertilizer. The past few decades have seen extensive research being carried out in the area of development and evaluation of different technologies available to estimate/measure soil moisture to aid in various applications and to facilitate the use of drip irrigation for users and farmers. In this technology, plant moisture and temperature are accurately monitored and controlled in real time over roots in the form of droplets, by developing smart monitoring system to save water and avoid water waste using drip irrigation technology. Water is delivered to the roots drop by drop, which saves water as well as prevents plants from being flooded and decaying due to excess water released by irrigation methods such as flood irrigation, border irrigation, furrow irrigation, and control basin irrigation. Drip irrigation with an embedded intelligent monitoring system is one of the most valuable techniques used to save water and farmers’ time and energy. In this paper, we design an embedded monitoring system based in the integrated 65 nm CMOS technology in agricultural practices which would facilitate agriculture and enable farmers to monitor crops. Hence, to demonstrate the feasibility, a prototype was constructed and simulated with modelsim and validated with nclaunch the both tools from Cadence, as well as implementation on the FPGA board, was be performed.


2021 ◽  
Vol 4 (2) ◽  
pp. 204-212
Author(s):  
Edi Anugrah ◽  
Muhammad Hasbi ◽  
Musfirah Putri Lukman

Eggplant (Solanum melongena L.) is one of the horticultural crop products and vegetable crop commodities. Growth and quality are influenced by soil conditions, climate, and plant properties. The main source of agriculture is water and soil nutrients. This research applies a smart monitoring and control system for eggplant based on internet of things with the drip irrigation method. This system uses a NodeMCU V3 microcontroller as a controller for the aquatic and water pump. Besides using the Soil Moisture FC-28 sensor to measure soil moisture as an alternative to detect water availability in plants. DHT11 sensors are also given to monitor the temperature and humidity of the air around the plant. In the system there is a monitoring feature that can monitor air humidity, air temperature and soil moisture data. The system can automatically drip irrigation through the relay module when the soil moisture is below 50% and stop the watering process when it reaches 60% humidity. The sensor detection results can be monitored in the Blynk application and monitoring data, in the form of soil moisture, air temperature and air humidity, are saved to the database and can be downloaded in the format (.csv).


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