Farming Monthly National January 2017 | Page 25

| Arable

PGRO Recommended Lists for Combining Peas and Spring and Winter Beans are announced

Stephen Belcher , PGRO Principal Technical Officer , comments on the 2015 / 16 trials season and on the newlyannounced 2017 Recommended Lists : “ Something that may or does change is a dictionary definition of variable , and it is a word that has been used more than once to describe the 2016 season and data obtained from trials . Recommended Lists are based on variable data , and while individual trials may exhibit low variability , when combined to produce a 5-year data set variability creeps in . Trials are grown in different seasons , geographic locations , soil types and weather conditions , all of which introduces variability .
" This was seen in 2015 / 16 when a mild and wet winter period in 2015 was followed by an unremarkable spring 2016 with temperatures and rainfall close to average . The summer months were generally cool with average amounts of rainfall , but with some localised heavy storms . The hot weekend of 18-20 July curtailed flowering and sunshine levels were lower than normal .”

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OMBINING PEAS … Overall 2016 trial yields ( 3.79t / ha ) were well down on the 5-year
( 4.81t / ha ) average .
Five trials went through to harvest . Yields were generally lower than in 2015 , but the trial near Harwich bucked the trend and gave the highest yields at 5.16t / ha . Trials varied greatly in the degree of lodging that occurred and were greatly influenced by bursts of heavy rainfall .
White peas Karpate a new white-seeded pea from Senova joins the RL with a P1 recommendation as the top yielding variety with a yield of 105 % of controls . Kareni , top yielder in 2015 moves to 2nd year of provisional recommendation . Salamanca , Mascara and Gregor remain fully recommended .
Large blue peas The aptly named large blue Bluetooth ( LS Plant Breeding ) joins Prophet , Daytona , Crackerjack and Campus as fully recommended varieties in that category . Two varieties , LG Stallion ( Limagrain UK ) and Vertix ( Senova ), join the list with a 1st year provisional recommendation . LG Stallion tops the large blue yield rankings at 102 % with Vertix 2 % lower . Kingfisher moves to 2nd year of provisional recommendation .
Small blue peas The small blue category makes a re-appearance on the RL with the addition of Greenwood ( IAR Agrii ) with a P1 recommendation . Yields are 6 % lower than Prophet , but while seed is smaller it is on the large side for a small blue . Standing ability rates at only 4 , similar to Crackerjack .
Maple peas Coloured flowered maple peas Mantara and Rose remain as fully recommended varieties .
Marrowfat peas Sakura and Genki remain fully recommended and top yielders in this category , Aikido moves to 2nd year provisional recommendation .
WINTER BEANS …
In the mild winter and where winter beans were planted early , vigorous growth gave rise to high levels of brackling , lodging and chocolate spot . Five of the nine trials went into the 2016 matrix . 2016 yields ( 5.73t / ha ) were 17 % higher than the 5 year average ( 4.89t / ha ), with sites at Thorney and Hereford yielding close to 6.5t / ha .
Several candidate varieties were withdrawn from RL consideration by the breeders , so there were no new additions to the RL . Clipper was also withdrawn .
In the pale hilum category , Tundra , Wizard and Honey remain as fully recommended varieties . Bumble moves from P1 to P2 recommendation and joins Tundra as the top yielding pale hilum types at 104 % of controls .
In the black hilum ( feed ) category Arthur was moved to the becoming outclassed category . SPRING BEANS … All ten spring bean trials were used in the 2016 matrix . 2016 yields ( 5.67t / ha ) were marginally up on the 5-year mean ( 5.44t / ha ). The highest yielding site was in Kent ( 6.52t / ha ), but several others yielded over 6t / ha .
Pale hilum types Vertigo , Fanfare , Fury , Fuego and Boxer all
remain as fully recommended varieties . New to the RL with a P1 recommendation is LG Cartouche ( Limagrain UK ). Yields were just 1 % lower than the best , but it only has a 4 ( same as Fuego ) rating for downy mildew resistance .
Lynx moves from P1 to P2 recommendation and joins Vertigo as the top yielding varieties . As in
2015 it has maintained a 7 rating for downy mildew resistance , the best amongst the pale hilum types .
Pyramid and Bablyon were removed from the RL .
Black hilum tic bean Maris Bead remains with a full recommendation .
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